In the U.S. Columbus Day is a national holiday when we celebrate Christopher Columbus' "discovery" of North America.
The "discovery" of an inhabited, civilized continent that had been visited by Europeans centuries earlier.
Christopher Columbus, a great explorer. He didn't know how to get to where he was going when he left, he didn't know where he was when he got there, and he didn't know where he'd been when he got back.
Indigenous, or aboriginal peoples are referred to differently in different countries. Personally, I much prefer Canada's "First Nations" designation; it seems the most respectful.
Here we call them "Indians" because of a wayward explorer who couldn't find his <insert body part here> with both hands and a map.
Sorry for the rant, but this has always been a sore spot for me.
How do you "discover" someplace that already has people living there?